Sink



FIG. 1 is a perspective view of the sink showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is another perspective view thereof.

The broken lines illustrate unclaimed features that form no part of the claimed design. The bottom view is not a matter of ornamental concern and has been omitted from the drawings. 

CLAIM The ornamental design for the sink, as shown and described. 